package com.zgx.plus.common.aop.aspect;

import cn.hutool.core.util.StrUtil;
import com.alibaba.fastjson2.JSON;
import com.alibaba.fastjson2.filter.SimplePropertyPreFilter;
import com.zgx.plus.common.aop.Log;
import com.zgx.plus.common.api.model.LoginEntity;
import com.zgx.plus.common.api.model.SysOperLogEntity;
import com.zgx.plus.common.api.service.AsyncLogService;
import com.zgx.plus.common.enums.BusinessStatus;
import com.zgx.plus.common.utils.SecurityUtils;
import com.zgx.plus.common.utils.ServletUtils;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.NamedThreadLocal;
import org.springframework.http.HttpMethod;
import org.springframework.stereotype.Component;
import org.springframework.validation.BindingResult;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.*;

/**
 * 操作日志记录处理
 */
@Aspect
@Component
public class LogAspect {
    private static final Logger log = LoggerFactory.getLogger(LogAspect.class);
    /**
     * 排除敏感属性字段
     */
    public static final String[] EXCLUDE_PROPERTIES = {"password", "oldPassword", "newPassword", "confirmPassword"};

    /**
     * 计算操作消耗时间
     */
    private static final ThreadLocal<Long> TIME_THREADLOCAL = new NamedThreadLocal<>("Cost Time");

    @Autowired
    private AsyncLogService asyncLogService;

    /**
     * 处理请求前执行
     */
    @Before(value = "@annotation(controllerLog)")
    public void boBefore(JoinPoint joinPoint, Log controllerLog) {
        TIME_THREADLOCAL.set(System.currentTimeMillis());
    }

    /**
     * 处理完请求后执行
     *
     * @param joinPoint 切点
     */
    @AfterReturning(pointcut = "@annotation(controllerLog)", returning = "jsonResult")
    public void doAfterReturning(JoinPoint joinPoint, Log controllerLog, Object jsonResult) {
        handleLog(joinPoint, controllerLog, null, jsonResult);
    }

    /**
     * 拦截异常操作
     *
     * @param joinPoint 切点
     * @param e         异常
     */
    @AfterThrowing(value = "@annotation(controllerLog)", throwing = "e")
    public void doAfterThrowing(JoinPoint joinPoint, Log controllerLog, Exception e) {
        handleLog(joinPoint, controllerLog, e, null);
    }

    protected void handleLog(final JoinPoint joinPoint, Log controllerLog, final Exception e, Object jsonResult) {
        try {
            // 获取当前的用户
            LoginEntity loginUser = SecurityUtils.getLoginUser();
            log.info("=loginUser=>{}",JSON.toJSONString(loginUser));
            // *========数据库日志=========*//
            SysOperLogEntity operLog = new SysOperLogEntity();
            if (Objects.nonNull(loginUser) && Objects.nonNull(loginUser.getUsername())) {
                operLog.setOperName(loginUser.getUsername());
            }
            if (Objects.nonNull(e)) {
                operLog.setStatus(BusinessStatus.FAIL.ordinal());
                operLog.setErrorMsg(StrUtil.sub(e.getMessage(), 0, 2000));
            }
            // 设置消耗时间
            operLog.setOperTime(new Date());
            operLog.setCostTime(System.currentTimeMillis() - TIME_THREADLOCAL.get());
            getControllerMethodDescription(joinPoint, controllerLog, operLog, jsonResult);
            asyncLogService.saveSysLog(operLog, loginUser.getToken());
        } catch (Exception exp) {
            // 记录本地异常日志
            log.error("异常信息:{}", exp.getMessage());
            exp.printStackTrace();
        } finally {
            TIME_THREADLOCAL.remove();
        }
    }

    /**
     * 获取注解中对方法的描述信息 用于Controller层注解
     *
     * @param log     日志
     * @param operLog 操作日志
     * @throws Exception
     */
    public void getControllerMethodDescription(JoinPoint joinPoint, Log log, SysOperLogEntity operLog, Object jsonResult) throws Exception {
        // 设置action动作
        operLog.setTitle(log.title());
        operLog.setBusinessType(log.businessType().ordinal());
        operLog.setOperatorType(log.operatorType().ordinal());
        // 是否需要保存request， 获取参数的信息，传入到数据库中
        if (log.isSaveRequestData()) {
            setRequestValue(joinPoint, operLog);
        }
        // 是否需要保存response，参数和值
        if (log.isSaveResponseData() && Objects.nonNull(jsonResult)) {
            operLog.setJsonResult(StrUtil.sub(JSON.toJSONString(jsonResult), 0, 2000));
        }
        // 设置方法名称
        operLog.setMethod(StrUtil.concat(true, joinPoint.getTarget().getClass().getName()
                , StrUtil.DOT, joinPoint.getSignature().getName(), "()"));
    }

    /**
     * 获取请求的参数，放到log中
     *
     * @param operLog 操作日志
     */
    private void setRequestValue(JoinPoint joinPoint, SysOperLogEntity operLog) {
        String requestMethod = operLog.getRequestMethod();
        if (HttpMethod.PUT.name().equals(requestMethod) || HttpMethod.POST.name().equals(requestMethod)) {
            String params = argsArrayToString(joinPoint.getArgs());
            operLog.setOperParam(StrUtil.sub(params, 0, 2000));
        } else {
            Map<?, ?> paramsMap = ServletUtils.getParamMap(ServletUtils.getRequest());
            operLog.setOperParam(StrUtil.sub(JSON.toJSONString(paramsMap, excludePropertyPreFilter()), 0, 2000));
        }
    }

    /**
     * 参数拼装
     */
    private String argsArrayToString(Object[] paramsArray) {
        StringBuilder params = new StringBuilder();
        if (paramsArray != null && paramsArray.length > 0) {
            for (Object o : paramsArray) {
                if (Objects.nonNull(o) && !isFilterObject(o)) {
                    params.append(JSON.toJSONString(o, excludePropertyPreFilter())).append(" ");
                }
            }
        }
        return params.toString().trim();
    }

    /**
     * 忽略敏感属性
     */
    public SimplePropertyPreFilter excludePropertyPreFilter() {
        SimplePropertyPreFilter simplePropertyPreFilter = new SimplePropertyPreFilter();
        simplePropertyPreFilter.getExcludes().addAll(Arrays.asList(EXCLUDE_PROPERTIES));
        return simplePropertyPreFilter;
    }

    /**
     * 判断是否需要过滤的对象。
     *
     * @param o 对象信息。
     * @return 如果是需要过滤的对象，则返回true；否则返回false。
     */
    @SuppressWarnings("rawtypes")
    public boolean isFilterObject(final Object o) {
        Class<?> clazz = o.getClass();
        if (clazz.isArray()) {
            return clazz.getComponentType().isAssignableFrom(MultipartFile.class);
        } else if (Collection.class.isAssignableFrom(clazz)) {
            Collection collection = (Collection) o;
            for (Object value : collection) {
                return value instanceof MultipartFile;
            }
        } else if (Map.class.isAssignableFrom(clazz)) {
            Map map = (Map) o;
            for (Object value : map.entrySet()) {
                Map.Entry entry = (Map.Entry) value;
                return entry.getValue() instanceof MultipartFile;
            }
        }
        return o instanceof MultipartFile || o instanceof HttpServletRequest || o instanceof HttpServletResponse
                || o instanceof BindingResult;
    }
}
